Device for the cleaning of explosion-chambers.



No. 748,034. .PATENTED DEC. 29, 1903.

F. ANSGHUTZ- DEVICE FOR THE'GLEANING OF EXPLOSION CHAMBERS.

APPLICATION FILED APR. 6. 1903.

N0 MODEL.

UNITED STATES Patented December 29, 1903.

PATENT OFFICE.

DEVICE FOR THE CLEANING OF EXPLOSION-CHAMBERS.

SPECIFICATION forming part of Letters Patent No. 748,034, dated December29, 1903.

Serial No. 161,331. (No model.)

To all whom it may concern.

Be it known that I, FRIEDRICH ANsoHI'iTz, mechanical engineer, a subjectof the German Emperor, and a resident of Neunkirchen near Trier,Germany, have invented new and useful Improvements in Devices for theCleaning of Explosion-Chambers at the End of Bore- Holes, of which thefollowing is a specification.

This invention relates to a device for the cleaning ofexplosion-chambers at the ends of horizontal bore-holes. Suchexplosionchambers are used at present for blasting purposes incoal-mines, ore-mines, quarries, and the like. In theseexplosion-chambers, which are made by means of particular boringinstruments, there remains always some powdery residue Which has to beremoved before the explosion-chamber is loaded, which is of essentialimportance in coal-mines, as the coal-dust is very noxious for blasting.

The device forming the object of the present invention allows a thoroughand easy cleansing of the explosion-chambers.

In the accompanying drawings the device is shown, in-

Figure 1, in a side view in operation. 2 shows in section how the upperend of the traction-wire for the spoon is arranged, and Fig. 3 is asection through the spoon on line A B of Fig. 2. t

The apparatus consists of a tube b, with a handle a, which tube issomewhat longer than the bore-hole. At the enlarged end of the tube In aspoon c is pivoted at d, which is adapted to be turned through an angleof ninety degrees by means of a traction-wire 6, one end of which isfixed to spoon c somewhat before and beside the pivot d. The other endof the traction-wire e is passed through a longitudinal slot of thetube, which longitudinal slot is arranged at the upper end of the tubenear the handle ct. To the upper end of the traction-wire e a ring f isfixed which serves as a handle.

The device is used as follows: After the instrument has been insertedinto the explosion-chamber 7a through the horizontal borehole Z ring fis pulled, so that the traction-Wire 6 turns the spoon 0 around itspivot (2, so that it stands at right angles to the tube 6, as shown inthe drawings in dotted lines at c. If now the handle a of tube b isrotated, the spoon 0 scoops up the dust and residue which have collectedat the lowest point of the explosionchamber. If the instrument iswithdrawn from the bore-hole, the spoon c is automat ically brought intothe horizontal position as soon as it abuts against the edge of theexplosionchamber.

By means of this instrument the explosionchamber can be thoroughlycleaned. It is advisable to arrange the pivot d of the spoon so that thespoon can be easily removed and replaced by a brush for brushing thedust off the walls of the explosion-chamber previously to cleaning thesame.

Having fully described my invention, what I claim, and desire to secureby Letters Patcm, is-

Device for the cleaning of explosion-chambers at the ends of horizontalbore-holes, comprising in combination a tube with a handle at the upperend, a spoon pivoted to the enlarged bottom end of said tube, atractionwire fixed at one end to the spoon before and beside the pivotof the same, a longitudinal slot at the upper end of the tube near thehandle for the passage of the upper end of the traction-wire and a ringfixed to the upper end of the traction-wire,substantially as describedand shown and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FRIEDRICH ANSGHUTZ.

Witnesses: 1

JACOB ADRIAN,

H. W. HARRIS.

